Selena Gomez and Benny Blanco just spent their first Valentine’s together as a couple, and what better way to celebrate than with a cute Insta pic. Something that this couple know all too well… The celebrity couple went public in December, but have since revealed they had actually been dating for six months in secret. Ever since going public, Selena Gomez hasn’t been shy in posting some PDA pics of her and her boo, although for Valentine’s Day, they’ve both tamed it down, and they’re pretty adorable. Selena Gomez and Benny Blanco share love for each other on first Valentine’s together Taking t…